ct deep riffle bioassessment by volunteers€¦ · riffle bioassessment by volunteers (rbv) program...

2015

RBV Program Annual Summary

Report

(Report #17)

www.ct.gov/deep/rbv

CT DEEP

Riffle Bioassessment by Volunteers

Program

Table of Contents Acknowledgements................................................................................................................ 1

RBV: The ‘Treasure Hunt’ for CT’s Healthiest Streams! ............................................................ 2

2015 Executive Summary ....................................................................................................... 3

2015 Participation Summary .................................................................................................. 4

Table 1. Annual RBV Program Participation Statistics 2010-2015 .................................................. 4 Figure 1. RBV Participation Map ..................................................................................................... 5

2015 Monitoring Results ........................................................................................................ 6

Table 2. Annual RBV Program Monitoring Location Statistics 2010-2015 ...................................... 6 Table 3. Summary of 2015 RBV Voucher Contents by RBV Category .............................................. 6 Figure 2. 2015 RBV Results Map ...................................................................................................... 7 Table 4. Frequency of RBV Types in 2015 Vouchers ........................................................................ 8 Table 5. Detailed 2015 RBV Station Results ..................................................................................... 9

Interpreting You RBV Results ............................................................................................... 12

Table 6. Interpretation of RBV Results by Most Wanted Count .................................................... 13

Appendix A: 2015 Local RBV Program Contact Information

Appendix B: 2015 RBV Monitoring Station Descriptions and Details

Appendix C: 2015 RBV Monitoring Location Photographs

Appendix D: 2015 RBV ‘Most Wanted’ Types Occurrence Maps

PHOTO CREDITS

Cover Photos Top Left: A ‘Michelin Man’ caddisfly, one of the RBV Program’s Most Wanted macroinvertebrate types. (Photo courtesy of the Salmon River Watershed Partnership). Center Left: RBV macroinvertebrate vouchers and datasheets ready for submission. (Photo courtesy of the Salmon River Watershed Partnership). Bottom Left: Volunteers from the Connecticut Audubon Society work to sort an RBV sample. (Photo courtesy Connecticut Audubon Society). Bottom Right: Volunteers from the Vernon Conservation Commission work to sample Barrows Brook. (Photo courtesy Vernon Conservation Commission)

Report Photos Additional photographs in this report were provided by the group credited beneath the caption – thank you to everyone who contributed!

Riffle Bioassessment by Volunteers (RBV) Program -2015 Summary Report Program materials are on the Internet at: www.ct.gov/deep/rbv

http://www.ct.gov/deep/rbv

Acknowledgements Local leaders across the state deserve special recognition for ensuring that the RBV program is a success each year. These individuals put countless hours into organizing their programs, coordinating with DEEP staff, recruiting and training volunteers, and more. During the 2015 season, the following individuals coordinated local RBV programs - thank you!!

Daniel Berheide (Town of Greenwich Inland Wetlands & Watercourses Agency)

James Biardi (Fairfield University) Jane Brawerman (CT River Coastal

Conservation District) Chris Brittain (WAMOGO High School) Doreen Carroll (Town of Greenwich Inland

Wetlands & Watercourses Agency) Paula Coughlin (CT Audubon Society at

Pomfret) Laurie Doss (The Marvelwood School) Tom Fahsbender (Washington Montessori

School, Steep Rock Association) Carol Haskins (Pomperaug River Watershed

Coalition) Penny Howell (East Lyme Conservation

Commission) Diba Khan-Bureau (Three Rivers Community

College)

Michael Jastremski (Housatonic Valley Association)

Connie Manes (Kent Conservation Commission) Becky Martorelli (Quinnipiac River Watershed

Association) Gian Morresi (Conservation Discovery Corps at

Connecticut's Beardsley Zoo) Tom Ouellette (Vernon Conservation

Commission) Rod Parlee (Bolton Conservation Commission) Alisa Phillips-Griggs (Farmington River

Watershed Association) Jean Pillo (The Last Green Valley, Eastern

Connecticut Conservation District) Judy Rondeau (Niantic River Watershed

Committee) Pat Young (Salmon River Watershed

Partnership; Eightmile River Watershed Wild & Scenic Partnership)

The past several years of RBV have come and gone so quickly we haven’t had a chance to properly acknowledge some impressive milestones:

• 2015 marked the 10th anniversary of the Pomperaug River Watershed Coalition’s local RBV program! Way to go PRWC volunteers!

• The CT Audubon Society and the Bolton Conservation Commission have completed thirteen amazing consecutive years of RBV monitoring – a huge congratulations and thank you to our two longest running programs!

• This season we were happy to welcome the return of two of the RBV program’s founding organizations – the Quinnipiac River Watershed Association and the CT River Coastal Conservation District – welcome back old friends!

And finally, the Riffle Bioassessment by Volunteers Program (RBV) would also not be possible without the dedication of the hundreds of volunteers that participate annually – thank you to each of you! We hope to see you again this fall!

Riffle Bioassessment by Volunteers (RBV) Program -2015 Summary Report Page 1

http://www.washingtonmontessori.org/

http://www.washingtonmontessori.org/

RBV: The Treasure Hunt for CT’s Healthiest Streams! The CT DEEP Riffle Bioassessment by Volunteers or “RBV” Program is an annual fall ‘treasure hunt’ for Connecticut’s healthiest streams. CT DEEP uses the data collected by RBV volunteers to expand its inventory of excellent small, high gradient Connecticut streams that have excellent water quality – our “Healthy Streams” list. RBV volunteers examine the water quality of local stream segments by studying the aquatic benthic macroinvertebrate community present in rocky or ‘riffle’ areas of these streams. If volunteers can find four or more pollution sensitive or ‘most wanted’ macroinvertebrates, CT DEEP can use this data to assess that stream as fully supporting water quality standards for aquatic life use – documenting it as one of CT’s healthiest streams! (Because it is a screening approach and not a more in-depth assessment methodology, RBV cannot provide a detailed water quality assessment nor can it be used to identify low or impaired water quality.)

Examples of Connecticut’s aquatic macroinvertebrates –

commonly called ‘stream bugs’ by RBV volunteers. Photographs courtesy of The Marvelwood School

Get Involved with RBV Today!

As an RBV volunteer you collect valuable environmental data that will help ensure protection of the beautiful stream in your neighborhood or backyard. If this sounds interesting, DEEP and your local RBV group would love to have your participation! (New volunteers are required to attend training before they can monitor.) Contact the State RBV Program Coordinator to find the program nearest you today!

No program in your area? Start a new program in 2016! If your group is interested in conducting RBV in a watershed or town not currently monitored, contact the State RBV Program Coordinator to discuss establishing a new program. CT DEEP is particularly interested in working with new groups to establish programs in the Medium to Highest priority areas noted in Figure 2 (page 7) of this report.

To learn more contact:

Meghan Lally State RBV Program

Coordinator [email protected]

860-424-3061 or visit

www.ct.gov/deep/rbv


2015 Executive Summary

2011 2012 2013 2014 2015

Total # of RBV Samples 120 132 140 94 68 # of ‘4 or More’ Samples 24 21 33 37 21 % Total ‘4 or More’ Samples 20% 16% 24% 39% 31% # Stations Monitored 117 127 137 92 68 # Waterbodies Monitored 68 96 92 78 54

The bar for the 2015 RBV program was set very high as the 2014 RBV Program results were the best yet in the 15 year history of the program! Despite the low flows in many of CT’s streams this past fall, in 2015, through hard work and dedication, RBV volunteers were once again able to expand upon the Connecticut’s healthiest streams inventory!

o 68 vouchers were collected; 21 of these vouchers (31%) contained 4 or more RBV ‘most wanted’ taxa, indicating that these stream segments are among Connecticut’s healthiest streams!

o 68 stations were monitored, including 20 new stations not previously monitored by DEEP. Stations spanned 68 waterbodies located in 30 towns.

o 17 Local RBV Programs coordinated programs in their area, approximately 350 volunteers from these groups and local partner organizations participated in the program.

2015 RBV volunteers represented watershed and conservation organizations, local commissions, scout troops, schools, and local businesses - thank you to all of our 2015 CT DEEP RBV partners!


2015 Participation Summary Table 1. Annual RBV Program Participation Statistics 2010-2015

2010 2011 2012 2013 2014 2015 # Local RBV Programs* 17 16 17 21 22 17 # Groups/Organizations Total* 22 21 22 30 45 31 # Volunteers (estimated) 400 400 400 565 450 350 # Towns Represented 41 44 56 51 39 30 *Local RBV Programs often consist of a partnership between several local groups in the town or watershed.

In 2015, seventeen (17) Local RBV Programs contributed date to the State (Table 1, Figure 1). Local RBV Programs consisted of partnerships between a variety of groups and organizations, including, river and watershed associations, local conservation commissions and agencies, environmental conservation groups, and educational institutions.

River and Watershed-Based Organizations: • Eightmile River Wild & Scenic

Coordinating Committee • Farmington River Watershed

Association • Housatonic Valley Association • Niantic River Watershed Committee • Pomperaug River Watershed Coalition • Quinnipiac River Watershed Association • Salmon River Watershed Partnership • The Last Green Valley

Environmental Conservation Groups:

• Colchester Land Trust • Connecticut Audubon Society Citizen

Science Program • Conservation Discovery Corps at

Connecticut's Beardsley Zoo • CT River Coastal Conservation District • Eastern CT Conservation District • The Nature Conservancy • Trout Unlimited, Thames Valley Chapter

Municipal Groups: • Bolton Conservation Commission • East Lyme Commission for the

Conservation of Natural Resources • Town of Greenwich Inland Wetlands &

Watercourses Agency • Vernon Conservation Commission

Education-Based Partners:

• Colchester Girl Scouts • Cub Scouts Pack 7 (East Lyme) • East Hampton High School

Environmental Science Club • Fairfield University • Housatonic Valley Regional High School • Middletown High School • RHAM High School • The Marvelwood School • Three Rivers Community College • UConn NRCA Program • WAMOGO High School • Washington Montessori School


Figure 1 (below). RBV monitoring locations spanned a total of 30 Connecticut towns in 2015 including:

• Ashford • Bethlehem • Bolton • Canaan • Cheshire • Colchester • East Haddam • East Hampton

• East Lyme • Eastford • Easton • Granby • Greenwich • Hebron • Litchfield • Lyme

• Manchester • Mansfield • Marlborough • Marlborough • Middletown • Pomfret • Salem • Salisbury

• Scotland • Southbury • Union • Vernon • Washington • Woodbury • Woodstock

Riffle Bioassessment by Volunteers (RBV) Program -2015 Summary Report

2015 Monitoring Results 2015 marked the 17th year volunteer monitoring groups collected and submitted vouchers to DEEP under the RBV program. An estimated 350 volunteers representing seventeen (17) Local RBV Programs participated in the 2015 program. Together, volunteers collected 68 vouchers from 68 unique locations on 54 different waterbodies (Table 2, Figure 2). The distribution of most wanted types in the samples ranged from 0 to 10, with total taxa types present in the vouchers ranging from 3 to 23.

Table 2. Annual RBV Program Monitoring Location Statistics 2010-2015 2010 2011 2012 2013 2014 2015 RBV Samples Submitted 119 120 132 140 94 68 # Monitoring Stations (Appendix B) 106 117 127 137 92 68 # Streams Monitored 76 68 96 92 78 54 # Samples w/ 4+ "Most Wanted" Types

18 (15%)

24 (20%)

21 (16%)

33 (24%)

37 (39%)

21 (31%)

Twenty-one (21) of the 2015 monitoring sites had 4 or more types in the ‘Most Wanted’ category, indicating that these stream segments are among Connecticut’s healthiest streams. Table 3 below summarizes the range of 2015 results by taxa category (i.e. “most”, “moderately” or “least” wanted/sensitive.). Detailed results for the 2015 RBV Program (i.e. voucher contents) are shown in Table 4.

Table 3. Summary of 2015 RBV Voucher Contents by RBV Category

Min Max Mean Median

Most Sensitive (Most Wanted) Taxa 0 10 2.9 3 Moderately Sensitive Taxa 1 8 4.6 5 Least Sensitive Taxa 0 4 1.2 1 Other Taxa 0 7 3.2 3 Total Taxa Count 3 23 11.9 12

Above: A volunteer with the Thames Valley Chapter of Trout Unlimited monitors Beaver

Brook in Scotland, Ct. Welcome to the RBV community Thames Valley TU!


Figure 2. 2015 RBV Results Map. The number of ‘Most Wanted’ macroinvertebrate types present in 2015 RBV voucher samples. Sites are considered to be ‘healthy’ if 4 or more ‘Most Wanted’ macroinvertebrate taxa were present and can be considered for listing as fully supporting aquatic life use support in the Integrated Water Quality Report.

Healthy stream segment!


Table 4 shows the frequency with which RBV taxa types were identified in vouchers. Appendix D contains maps of the occurrence of most wanted types in 2015.

Table 4. Frequency of RBV Types in 2015 Vouchers #Vouchers with Taxa

%Vouchers with Taxa

Frequency Rank*

Mos

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(Mos

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axa

1 Drunella sp. 0 0% 35 2 Isonychia sp. 29 43% 8 3 Epeorus sp. 5 7% 26 4 Peltoperlidae (All genera) 12 18% 15 5A Perlidae (All genera) 54 79% 1 5B Pteronarycs sp. 5 7% 25 5C Capniidae 1 1% 34

Perlodidae 3 4% 32 Leuctridae 3 4% 31 Chloroperlidae 4 6% 28 Nemouridae 9 13% 21 Taeniopterygidae 10 15% 18

6A Glossosoma sp. 21 31% 12 6B Apatania sp. 4 6% 27 7 Rhyacophila sp. 17 25% 13 8A Brachycentrus sp. 11 16% 17 8B Lepidostoma sp. 7 10% 22

Mod

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Sens

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Tax

a

9 Hydropsychidae 52 76% 3 10 Philopotamidae 42 62% 5 11 Maccafertium sp. 45 66% 4 12 Psephenus sp. 40 59% 6 13A Corydalus sp. 9 13% 20 13B Nigronia sp. 53 78% 2 14A Gomphidae 5 7% 24

Cordulegasteridae 24 35% 11 Aeshnidae 29 43% 7

14B Calopterygidae 3 4% 30 Coenagrionidae 11 16% 16

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t Sen

sitiv

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xa

15A Amphipoda 9 13% 19 15B Isopoda 6 9% 23 15C Leech 2 3% 33 15D Midge 24 35% 10 15E Simuliidae 3 4% 29 15F Snail 12 18% 14 15G Worm 24 35% 9

Similar to previous years, the ‘top five’ RBV taxa found in 2015 vouchers included the common stonefly (Perlidae), fishfly (Nigronia sp.), the common net-spinner caddisfly (Hydropsychidae), three-tailed mayfly (Maccaffertium sp. and Stenonema sp.), and the fingernet caddisfly (Philopotamidae). The five least common taxa in the 2015 vouchers included several families of miscellaneous stoneflies (Nemouridae, Capniidae, and Perlodidae), along with Coenagrionidae (dragonfly), and leech. No vouchers contained the ‘body builder’ mayfly (Drunella sp.).


Table 5. Detailed 2015 RBV Station Results. Table 3 provides a list of stations monitored with RBV in 2015 and the contents of the corresponding voucher submitted to DEEP for analysis. The samples are sorted by stream name and Station number. Column numbers corresponds to the RBV macroinvertebrate organism ID number (noted on the RBV program materials). Stations at which four or more ‘Most Wanted’ RBV taxa types were present in the voucher are emphasized in bold and italicized font. Additional station details can be found in Appendix B. (Note: all collection dates are for the year 2015.)

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Station # Waterbody Name Town Date 1 2 3 4 5A 5B 5C 6A 6B 7 8A 8 B 9 10 11 12 13A 13B 14A 14B 15A 15B 15C 15D 15E 15F 15G

18821 Baker Brook, Unnamed tributary to BOLTON 11/15 0 X 1 X 1 3 5

15138 Bantam River LITCHFIELD 11/9 X X X X 4 X X X X X X 7 X 1 4 16

15594 Barrows Brook VERNON 10/17 X X X 4 X X X X 4 X 1 1 10

15312 Beaver Brook LYME 10/17 X X X X 4 X X X X X X 6 0 3 13

18996 Beaver Brook SCOTLAND 10/14 X X X 3 X X X X 4 X 1 2 10

19000 Beaver Brook SCOTLAND 10/4 X 1 X X X X 5 0 4 10

15519 Bee Brook WASHINGTON 10/23 X X X 3 X X X X 4 X 1 3 11

19001 Bigelow Brook ASHFORD 9/18 X X 2 X X X X X X 6 0 3 11

18963 Birch Mountain Brook MANCHESTER 10/12 X X 2 X X 2 X X X 3 4 11

18964 Birch Mountain Brook MANCHESTER 10/17 0 X X X X X X 6 X X X 3 4 13

18965 Birch Mountain Brook MANCHESTER 11/1 X X X X 6 X X X X 4 X X X 3 6 19

18966 Birch Mountain Brook MANCHESTER 11/22 X X 3 X X X X 4 X X 2 3 12

16266 Bolton Pond Brook BOLTON 11/15 X 2 X X 2 X X X X 4 3 11

19010 Branch Brook EASTFORD 10/2 X X 2 X X X X X 5 X 1 0 8

16139 Brown Brook CANAAN 10/19 X X X X X X 6 X X X X X 5 X 1 4 16

16333 Bullet Hill Brook SOUTHBURY 9/19 X X X 3 X X 2 X X 2 2 9

15315 Burnhams Brook EAST HADDAM 10/20 X 1 X X X 3 0 2 6

14523 Burton Brook SALISBURY 10/22 X 1 X 1 X 1 0 3

16323 Coginchaug River MIDDLETOWN 10/15 X X 2 X X X X 4 X X 2 4 12

18971 Converse Pond Brook GREENWICH 11/30 X X X X 4 X X X X 4 X X 2 2 12


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18499 Cranberry Meadow Brook EAST LYME 10/19 X 1 X X X X X 6 0 3 10

16119 Day Pond Brook COLCHESTER 11/21 X X X 3 X X X X 4 X 1 2 10

16324 Dickinson Creek COLCHESTER 9/12 X X X X 4 X X X X X X X 7 X 1 0 12

17765 Dickinson Creek COLCHESTER 10/18 X X 2 X X X X 4 0 2 8

18962 E. Branch Eightmile River SALEM 10/31 X X X X 4 X X X X X X 6 0 5 15

16122 Early Brook EAST HADDAM 10/31 X X X 3 X X X 3 X 1 2 9

18518 Eightmile River EAST HADDAM 10/17 X X X X X 5 X X X X X X 7 0 5 17

18936 Eightmile River LYME 10/17 X X 2 X X X X X X X 7 X 1 3 13

18979 Enders Brook GRANBY 10/6 X X X X X X 6 X X X X X 5 X X 2 7 20

18998 English Neighborhood Brook WOODSTOCK 10/9 X X 2 X X X X X X 6 X X 2 2 12

16440 Fawn Brook HEBRON 11/14 X X X X 4 X X X X X 5 0 6 15

18433 Fawn Brook MARLBOROUGH 10/15 X X 2 X X X X X X 7 X 1 4 14

18846 Fawn Brook HEBRON 10/15 X X X X 4 X X X X X 5 X 1 2 12

15888 Fawn Brook, W. Branch MARLBOROUGH 10/15 X X 2 X X X X 4 X 1 6 13

17322 Fourmile River EAST LYME 11/21 X 2 X X 2 X X X 3 3 10

18961 Fraser Brook SALEM 10/31 X 1 X X X 3 X 1 1 6

15592 French Brook BOLTON 11/15 X 1 X X X X 4 X 1 1 7

16696 GOODHILL BROOK WOODBURY 9/19 X X X X 4 X X X X 4 X X 2 5 15

16699 GRAVELLY BROOK WOODSTOCK 10/31 X X X X 4 X X 2 0 5 11

15313 Harris Brook SALEM 10/17 X X 2 X X X X 5 X 1 3 11

18729 Harris Brook SALEM 10/31 X X X 3 X X X X X X X 8 0 3 14

18817 Hawleys Brook EASTON 10/10 X X 2 X X X 4 X 1 3 10

16167 Jeremy River COLCHESTER 9/12 X X 2 X X X X X 5 X 1 5 13

17324 Latimer Brook EAST LYME 11/14 X X 2 X X X X X 5 X X 2 2 11

18413 Latimer Brook EAST LYME 10/15 X X X X 4 X X X X X X X 8 X X X 3 1 16

18495 Latimer Brook EAST LYME 10/15 X X X 4 X X X X 5 X X X 3 6 18

16088 Lebanon Brook WOODSTOCK 9/11 X 1 X X X X X 5 0 0 6

18981 Lyman Brook MARLBOROUGH 10/24 X X X 3 X X X X 4 0 7 14


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18982 Meadow Brook COLCHESTER 9/28 X X X X 4 X X X X X X 6 0 4 14

15211 Merrick Brook SCOTLAND 10/31 X X X 3 X X X X 4 X 1 5 13

18871 Moodus River EAST HADDAM 9/19 X X X 3 X X X X X X X 7 X X 2 2 14

16335 Nonewaug River WOODBURY 9/19 X X 2 X X X X X X 6 X 1 2 12

17923 Peckham Brook WOODSTOCK 10/24 X X X X 4 X X X X X 5 X 1 4 14

18983 Pocotopaug Creek EAST HAMPTON 10/10 X X X 3 X X X X X 5 X 1 2 11

16995 Railroad Brook VERNON 10/17 X 1 X X X X 4 X 1 2 8

17703 Railroad Brook VERNON 10/17 X X X X X X X 7 X X X X X X 6 X 1 3 17

17971 Railroad Brook BOLTON 11/15 X 1 X X X X X 6 X X X 3 3 13

18980 Roaring Brook CHESHIRE 9/27 X X 2 X X 2 0 1 5

14440 Salmon River EAST HAMPTON 9/12 X X X 3 X X X X X X 6 X X 2 6 17

15007 Sawmill Brook MANSFIELD 10/23 X X X 3 X X X 3 0 2 8

16431 Sprain Brook WOODBURY 9/19 X 1 X X X X X 5 X X 2 5 13

15713 Still River WOODSTOCK 9/25 X X X 3 X X X X 4 X 1 1 9

18967 Sutton's Brook GREENWICH 11/20 X X X 4 X X 2 X 1 4 11

18823 Tucker Brook VERNON 10/17 X 1 X X X 3 X 1 1 6

18958 Walker Brook WASHINGTON 10/26 X X X X 4 X X X 3 0 5 12

17593 Wappoquia Brook POMFRET 10/10 X X X 3 X X X X X X 6 0 2 11

18984 Willeys Brook (Christopher Brook) EAST HAMPTON 11/13 X X 2 X X X X X 5 X X 2 3 12

17333 Wood Creek BETHLEHEM 9/19 X X X X X X X X X X 10 X X X X X 5 X 1 7 23


Interpreting Your Results 2015 RBV monitoring locations that supported four of more ‘Most Wanted’ macroinvertebrate types, are considered to be characterized by excellent water quality conditions. DEEP will integrate these ‘4 or more’ results into the biennial water quality assessment process, noting them as one of Connecticut’s healthy waters.

Table 6 provides guidance for how to interpret your RBV results. Table 6 is intended to serve as general guidance; Local RBV Program Coordinators are encouraged to contact the State RBV Coordinator to discuss follow-up actions for specific monitoring locations as needed.

Above: Students from RHAM High School proudly display their RBV

voucher for the West Branch of Fawn Brook in Marlborough, CT. RHAM is a returning RBV participant, monitoring under the supervision of the

Salmon River Watershed Partnership’s local RBV program.


Table 6. Interpretation of RBV Results by Most Wanted Count.

# ‘Most Wanted’

Organisms What Does it Tell Us? 0-1 Drop this site from future monitoring efforts…

More information is needed to determine why Most Wanted types were rare or absent in the sample. Reasons may include poor water quality, but it could also be that this just isn’t the right type of site for RBV. If there are no concerns regarding the volunteer sampling effort, follow-up RBV monitoring is not suggested for this site.

DEEP Assessment Decision: No Assessment Made

Recommended Volunteer Follow-Up Action: Do not revisit this site with RBV.

2 Double check whether this is a good spot to be using the RBV method… More information is needed to determine why Most Wanted types were limited in the sample. Reasons may include less than excellent water quality or unusual flow conditions (i.e. very high or very low) during the monitoring season; however, it could also be that this site does not have adequate riffle habitat or that your volunteers may need additional, targeted training.

DEEP Assessment Decision: No Assessment Made

Recommended Volunteer Follow-Up Action:

Volunteers should cease using RBV to monitor this site if: • The site does not meet the RBV site requirements (i.e. no riffle habitat or

watershed area >15 mi2); • The MMI model score prediction is less than 48 (see Appendix B); or • The site was previously monitored using RBV and less than 4 most

wanted were found during the last monitoring event.

If this is a first time monitoring location, and none of the above bullets are true, assign the site a low to medium priority for follow-up monitoring. Volunteers may also need additional targeted training to insure that they are collecting their sample from riffle habitat, checking for organisms attached to cobbles, and able to distinguish between organism types when sorting.

(Continued on next page)


# ‘Most Wanted’

Organisms What Does it Tell Us? 3 A Very Good Sign – Keep this Site on Your Radar!

Three Most Wanted or very sensitive macroinvertebrate types in a sample is a strong signal of good to excellent water quality. Although three most wanted is not statistically enough data for DEEP to list the site as ‘fully supporting’ State water quality standards without additional monitoring, particularly if this is the first piece of data we have at this site, this is a great find!

DEEP Assessment Decision: No Assessment Made… but consider trying again!

Recommended Volunteer Follow-Up Action: If this was the first time the site was monitored with RBV, and the site’s water quality is predicted to be high (e.g. high MMI score) this site should be a high priority candidate for re-monitoring next RBV season. Pay careful attention to net placement within riffle habitat, avoiding the edges of the stream. Instruct volunteers to also give extra attention to rock scrubbing/substrate kicking during the 2015 monitoring effort. A second look at that cobble before you toss it might be all it takes to get that 4th Most Wanted type in your sample!

If however this site was previously monitored with RBV and 3 or fewer most wanted types were found, this site should be assigned a lower priority than those sites in your region that have not yet been monitored with RBV and that are predicted to have a water quality/MMI score greater than 48.

4+ Excellent!! Lots of very sensitive macroinvertebrate types were present – you found the treasure! This is a very clear signal of excellent water quality as the ‘Most Wanted’ types cannot survive in degraded streams or otherwise low water quality conditions.

DEEP Assessment Decision: Considered for ‘Fully Supporting’ State aquatic life use standards. Fully supporting sites will be listed in next Integrated Water Quality Report and submitted to EPA and Congress

Recommended Volunteer Follow-Up Action: Revisit every 2 to 5 years to continue documenting the excellent health of this stream.


Appendix A: 2015 Local RBV Program Contact Information Local RBV Program Local Coordinator(s) Name(s) Email Bolton Conservation Commission Rod Parlee [email protected] CT Audubon Society - Pomfret Center Citizen Science Program Paula Coughlin [email protected] East Lyme Conservation Commission Penny Howell [email protected] Eightmile River Wild & Scenic Coordinating Committee & Pat Young [email protected] Three Rivers Community College Diba Khan-Bureau [email protected] Fairfield University & Connecticut’s Beardsley Zoo CDC

Jim Biardi Gian Morresi

[email protected] [email protected]

Farmington River Watershed Association Alisa Phillips-Griggs [email protected] Housatonic Valley Association Mike Jastremski [email protected] Niantic River Watershed Committee Judy Rondeau [email protected] Pomperaug River Watershed Coalition Carol Haskins [email protected] Quinnipiac River Watershed Association Becky Martorelli [email protected] Salmon River Watershed Partnership Pat Young [email protected] The Last Green Valley Jean Pillo [email protected] Town of Greenwich IWWA Doreen Carroll-Andrews [email protected] Vernon Conservation Commission Tom Ouellette

Jane Seymour [email protected] [email protected]

WAMOGO High School Chris Brittain [email protected] Washington Montessori School Tom Fahsbender [email protected]

Riffle Bioassessment by Volunteers (RBV) Program -2015 Summary Report Appendix A

mailto:[email protected]



















Appendix B: 2015 RBV Monitoring Station Description & Details The following provides a description of the official CT DEEP monitoring station to which 2015 RBV samples were assigned. Note that the actual RBV monitoring location may have been slightly upstream or downstream of the official DEEP station. Locations are sorted by DEEP Station ID number. The number of most wanted types found during 2015 monitoring, the associated upstream watershed area and the predicted water quality score (i.e. Macroinvertebrate Multimetric Index or MMI score) are shown at the far right. Organization Abbreviation Key:

Code Local RBV Program Name

Code Local RBV Program Name Code Local RBV Program Name

BCC Bolton Conservation Commission HVA Housatonic Valley Association NRCA UConn Natural Resources Conservation Academy Program

CAS CT Audubon Society - Pomfret Center NRWC Niantic River Watershed Committee VCC Vernon Conservation Commission CRCCD CT River Coastal Conservation District PRWC Pomperaug River Watershed Coalition WHS WAMOGO High School ELCC East Lyme Conservation Commission QRWA Quinnipiac River Watershed Association WMS Washington Montessori School

FRWA Farmington River Watershed Association SRWP Salmon River Watershed Partnership 8MILE Eightmile River Wild & Scenic Coordinating Committee

FFLDU/ZOO Fairfield University & Connecticut’s Beardsley Zoo CDC TLGV The Last Green Valley

GIWWA Town of Greenwich IWWA TRCC Three Rivers Community College

Station # Stream Name Volunteer Location Description Town Latitude Longitude

Upstream Area (mi2)

Predicted Water Quality Score (0-100)

Local RBV Program Date

Most Wanted Count

14440 Salmon River at Salmon River State Forest picnic area EAST HAMPTON 41.55260 -72.44960 101.9 67 SRWP 9/12/15 3 14523 Burton Brook 200ft upstream, 15 ft. of Walton Road Bridge SALISBURY 41.96670 -73.43410 3.7 64 HVA 10/22/15 1 15007 Sawmill Brook 100 ft. upstream of culvert on Conantville Rd MANSFIELD 41.73980 -72.20170 3.7 61 TLGV 10/23/15 3 15138 Bantam River Route 63 LITCHFIELD 41.73050 -73.18680 21.6 58 WHS 11/9/15 4 15211 Merrick Brook 100 ft. upstream of Bass Rd SCOTLAND 41.68000 -72.10480 11.5 68 TLGV 11/2/15 3 15312 Beaver Brook 350m from Beaver Brook Rd, 36m down river

from wood bridge LYME 41.40995 -72.32906 8.6 76 TRCC 10/17/15 4

15313 Harris Brook Walden Preserve SALEM 41.47330 -72.28510 6.2 67 TRCC 10/17/15 2 15315 Burnham’s Brook mouth EAST HADDAM 41.46030 -72.33430 5.4 68 8MILE 10/20/15 0 15519 Bee Brook 100m upstream of Shepaug Confluence WASHINGTON 41.65710 -73.31810 4.8 63 WMS 10/23/15 3 15592 French Brook 126 French Road (downstream) BOLTON 41.74420 -72.44850 0.8 60 BCC 11/15/15 1 15594 Barrows Brook 50 ft. upstream from Tankerhoosen River confluence VERNON 41.84020 -72.43650 0.6 47 VCC 10/17/15 4 15713 Still River at Rte. 198 - south of Eastford/Woodstock line WOODSTOCK 41.91580 -72.07740 7.8 70 CAS 9/25/15 2

Riffle Bioassessment by Volunteers (RBV) Program -2015 Summary Report Appendix B


Upstream Area (mi2)



Most Wanted Count

15888 Fawn Brook, W. Branch 75ft above confluence with east branch MARLBOROUGH 41.63920 -72.41550 4.2 72 SRWP 10/15/15 2 16088 Lebanon Brook at culvert crossing Rte. 198/Eastford Rd - downstream

of Griggs Pond WOODSTOCK 41.99450 -72.08360 2.1 79 CAS 9/11/15 1

16119 Day Pond Brook 15 upstream confluence with Salmon River COLCHESTER 41.56230 -72.43380 1.1 61 SRWP 11/21/15 3 16122 Early Brook 24m upstream of Haywardville Rd EAST HADDAM 41.49780 -72.34350 2.3 81 TRCC 10/31/15 3 16139 Brown Brook 50m upstream of Rte. 63 crossing CANAAN 41.92670 -73.27990 5.7 94 HVA 10/19/15 6 16167 Jeremy River 0.25 mi downstream Rte. 149 and Rte. 2 COLCHESTER 41.58940 -72.39480 35.8 62 SRWP 9/12/15 2 16266 Bolton Pond Brook 634 Hop River Rd, Upstream of bridge BOLTON 41.77840 -72.41670 5.1 57 BCC 11/15/15 2 16323 Coginchaug River 50 ft. upstream of Rte. 157 crossing MIDDLETOWN 41.53940 -72.68580 33.3 55 CRCCD 10/15/15 2 16324 Dickinson Creek 50 yds. downstream of Comstock Bridge Rd COLCHESTER 41.55750 -72.44200 15.1 64 SRWP 9/12/15 4 16333 Bullet Hill Brook Ewald Park, approx. 300 ft. US confluence with

Pomperaug River SOUTHBURY 41.48260 -73.22050 3.6 44 PRWC 9/19/15 3

16335 Nonewaug River Adjacent to the USGS streamflow gage, access from Mill Road

WOODBURY 41.57830 -73.17450 16.3 54 PRWC 9/19/15 2

16431 Sprain Brook DS Route 47 adjacent to Papermill Road WOODBURY 41.56960 -73.22590 11.0 62 PRWC 9/19/15 1 16440 Fawn Brook 100 ft. downstream from Rte. 66 intersection HEBRON 41.64830 -72.39930 6.2 73 SRWP 11/14/15 4 16696 Goodhill Brook Grassy Hill Road, DS from bridge crossing WOODBURY 41.54080 -73.23420 1.9 63 PRWC 9/19/15 4 16699 GRAVELLY BROOK Intersection of County rd. and Rte. 169 WOODSTOCK 41.98390 -71.99390 1.7 72 CAS 10/31/15 4 16995 Railroad Brook Within Belding WMA, off Bread & Milk Road VERNON 41.82772 -72.44828 2.9 61 VCC 10/17/15 1 17322 Fourmile River Spring Rock Rd EAST LYME 41.33900 -72.25920 5.4 61 ELCC 11/21/15 2 17324 Latimer Brook 100 m US of St Mathias Church, RT 161 EAST LYME 41.40730 -72.22170 11.6 61 NRWC 11/14/15 2 17333 Wood Creek UP Arch Bridge Road BETHLEHEM 41.62750 -73.22570 3.4 68 PRWC 9/19/15 9 17593 Wappoquia Brook Downstream of Rte 169 POMFRET 41.87225 -71.96232 5.8 65 CAS 10/10/15 2 17703 Railroad Brook 500 ft. upstream of Valley Falls Pond VERNON 41.81913 -72.44547 1.9 58 VCC 10/17/15 7 17765 Dickinson Creek 100ft downstream viaducts, airline trail COLCHESTER 41.56313 -72.44951 14.8 64 SRWP 10/18/15 2 17923 Peckham Brook 100 Paine District Rd WOODSTOCK 41.97708 -71.96292 1.2 69 CAS 10/24/15 3 17971 Railroad Brook 1/4 mile north of Tunnel parking area BOLTON 41.79220 -72.45299 0.5 58 BCC 11/15/15 1 18413 Latimer Brook 100 yds. US Colony Road EAST LYME 41.38397 -72.21429 16.2 54 NRWC 10/15/15 4 18433 Fawn Brook 150 ft. below confluence of east and west branches MARLBOROUGH 41.62235 -72.40910 12.8 73 SRWP 10/15/15 2 18495 Latimer Brook East of Flanders IGA Plaza, US of RT 1 EAST LYME 41.36726 -72.20808 17.2 54 NRWC 10/15/15 4 18499 Cranberry Meadow Brook upper, off Walnut Hill Rd EAST LYME 41.40869 -72.23103 2.2 65 ELCC 10/19/15 1 18518 Eightmile River Devil's Hopyard Road, first parking lot on right from 2 EAST HADDAM 41.47300 -72.33900 13.8 79 TRCC 10/17/15 5 18729 Harris Brook 0.25 mile upstream Music Vale Rd SALEM 41.49502 -72.26955 2.0 66 TRCC 10/31/15 3 18817 Hawley’s Brook Within Trout Brook Preserve, Paul Busch Trail, ~1km

north of parking lot

EASTON 41.25111 -73.34250 0.5 100 FFLDU/ ZOO

10/10/15 2



Upstream Area (mi2)



Most Wanted Count

18821 Baker Brook, tributary to School Rd near Hebron Rd, downstream from two culverts

BOLTON 41.74794 -72.42410 0.6 59 BCC 11/15/15 0

18823 Tankerhoosen River, tributary to ("Tucker Brook")

100 ft. upstream of Tankerhoosen Confluence VERNON 41.82364 -72.48720 1.5 46 VCC 10/17/15 1

18846 Fawn Brook 75 ft. above confluence with west branch HEBRON 41.62790 -72.40813 6.4 73 SRWP 10/15/15 4 18871 Moodus River upstream Gristmill Rd crossing EAST HADDAM 41.50859 -72.44826 12.1 68 SRWP 9/19/15 3 18936 Eightmile River Lyme Land Conservation Trust Pleasant Valley

Preserve LYME 41.41528 -72.33762 45.8 63 TRCC 10/17/15 2

18958 Walker Brook Just downstream from intersection of Walker Brook Rd and Chapin Rd

WASHINGTON 41.61645 -73.35282 1.9 63 WMS 10/26/15 4

18961 Fraser Brook Salem Community Park SALEM 41.48108 -72.25275 0.3 78 TRCC 10/31/15 1 18962 East Branch Eightmile River 100m downstream of Darling Road culvert/bridge SALEM 41.44221 -72.30620 19.9 65 TRCC 10/31/15 4 18963 Birch Mountain Brook at Case Pond lot MANCHESTER 41.76683 -72.48109 1.5 48 NRCA 10/12/15 2 18964 Birch Mountain Brook at Spring Street MANCHESTER 41.76130 -72.49036 1.7 47 NRCA 10/17/15 0 18965 Birch Mountain Brook at Birch Mountain Rd pull off, upstream Blue Ridge Dr. MANCHESTER 41.75563 -72.47113 0.4 48 NRCA 11/1/15 6 18966 Birch Mountain Brook Downstream Blue Ridge Drive MANCHESTER 41.75752 -72.47293 0.6 48 NRCA 11/22/15 2 18967 Byram River, Tributary to

("Sutton's Brook") 900ft Southeast of Audubon Lane cul-de-sac GREENWICH 41.08603 -73.70111 0.1 53 GIWWA 11/20/15 4

18971 Converse Pond Brook 100m downstream of Lake Avenue GREENWICH 41.10526 -73.65308 2.3 52 GIWWA 11/30/15 4 18979 Enders Brook 50m upstream Rte. 219, within Enders State Forest GRANBY 41.95346 -72.88381 3.0 71 FRWA 10/6/15 7 18980 Roaring Brook 300m west of Roaring Brook Rd, within Roaring Brook

Park CHESHIRE 41.48306 -72.94417 0.7 56 QRWA 9/27/15 2

18981 Lyman Brook 400 ft. downstream of Glenwood Drive cul-de-sac MARLBOROUGH 41.63271 -72.45228 0.6 57 SRWP 10/24/15 3 18982 Meadow Brook 200 ft. downstream Prospect Hill Rd crossing COLCHESTER 41.58306 -72.37972 10.9 54 SRWP 9/28/15 4 18983 Pocotopaug Creek downstream Rte. 16 crossing EAST HAMPTON 41.56424 -72.50734 5.5 51 SRWP 10/10/15 3 18984 Wiley’s Brook

("Christopher Brook") 47 Clark Hill Rd EAST HAMPTON 41.59571 -72.52038 0.2 41 SRWP 11/13/15 2

18996 Beaver Brook 200 ft. upstream of Bass Rd SCOTLAND 41.68417 -72.10924 7.7 74 TLGV 10/14/15 3 18998 English Neighborhood Brook crosses Rte. 169 WOODSTOCK 41.99117 -71.99663 4.6 73 CAS 10/9/15 2 19000 Beaver Brook 500 ft. downstream of Bass Rd SCOTLAND 41.68217 -72.10880 7.8 74 TLGV 10/4/15 1 19001 Bigelow Brook DS of bridge at Boston Hollow Rd ASHFORD 41.94347 -72.14836 15.7 62 CAS 9/18/15 2 19010 Branch Brook Upstream Center turnpike within Yale Forest EASTFORD 41.94825 -72.12365 2.1 93 CAS 10/2/15 2


Appendix C: 2015 RBV Monitoring Location Photographs *Yellow stars indicate sites for which a 2015 voucher containing four or more ‘most wanted’ taxa was submitted to DEEP

Station 18821 – Unnamed tributary to Baker Brook

Monitored on 11/15/2015 by the Bolton Conservation Commission.

Result – 0 Most Wanted types

Station 15312 – Beaver Brook

Monitored on 10/17/2015 by Three Rivers Community College


Station 15138 – Bantam River

Monitored 11/09/2015 by WAMOGO High School Result – 4 Most Wanted types

Riffle Bioassessment by Volunteers (RBV) Program -2015 Summary Report Appendix C

Station 15594 - Barrows Brook

Monitored on 10/17/2015 by the Vernon Conservation Commission


Station 19001 - Bigelow Brook

Monitored on 09/18/2015 by CT Audubon Society’s Citizen Science Program

Results – 2 Most Wanted types


Monitored on 10/14/2015 by The Last Green Valley Result – 3 Most Wanted types


Monitored on 10/05/2015 by The Last Green Valley and Trout Unlimited (Thames Valley Chapter)

Result – 1 Most Wanted taxa

Station 18963 - Birch Mountain Brook Monitored on 10/12/2015 by Jen Lee

(UConn NRCA Program) Result – 2 Most Wanted types


Station 15519 – Bee Brook

Monitored on 10/23/2015 by the Washington Montessori School


Station 18964 – Birch Mountain Brook Monitored on 10/17/2015 by Jen Lee







Station 16266 - Bolton Pond

Monitored on 11/15/2015 by Bolton Conservation Commission


Station 19010 – Branch Brook

Monitored on 10/02/2015 by CT Audubon Society’s Citizen Science Program


Station 16139 – Brown Brook

Monitored on 10/19/2015 by the Housatonic Valley Association


Station 16333 – Bullet Hill Brook

Monitored on 09/21/2015 by the Pomperaug River Watershed Coalition



Station 15315 – Burnham Brook

Monitored on 10/20/2015 by the Eightmile River Wild & Scenic Coordinating Committee w/ The Nature

Conservancy Result – 0 Most Wanted types

Station 14523 – Burton Brook

Monitored on 10/22/2015 by the Housatonic Valley Association w/ Housatonic Valley

Regional High School Result – 1 Most Wanted type

Station 18967 – “Sutton Brook”

Monitored on 11/20/2015 by the Greenwich IWWA Result – 4 Most Wanted types

Station 16323 – Coginchaug River

Monitored on 10/15/2015 by CRCCD & Middletown HS Result – 2 Most Wanted types

Station 18971 – Converse Pond Brook

Monitored on 11/30/2015 by the Greenwich IWWA Result – 4 Most Wanted types


Station 18499 – Cranberry Meadow Brook

Monitored on 10/19/2015 by the East Lyme Commission for the Conservation of Natural Resources

Result – 1 Most Wanted type

Station 16119 – Day Pond Brook

Monitored on 11/21/2015 by the Salmon River Watershed Partnership


Station 16324 – Dickinson Creek



Station 17765 – Dickinson Creek

Monitored on 10/18/2015 by the Salmon River Watershed Partnership, the Colchester Land Trust &

the Colchester Girl Scouts Result – 2 Most Wanted types

. Station 16122 – Early Brook

Monitored on 10/31/2015 by Three Rivers CC Result – 3 Most Wanted types


Station 18962 – East Branch Eightmile River



Station 18518 –Eightmile River



Station 18936 –Eightmile River



Station 18979 –Enders Brook

Monitored on 10/06/2015 by the Farmington River Watershed Association


Station 18998 – English Neighborhood Brook

Monitored on 10/09/2015 by the CT Audubon Society Citizen Science Program


Station 16440 – Fawn Brook, East Branch




Station 18433 – Fawn Brook

Monitored on 10/15/2015 by the Salmon River Watershed Partnership w/ RHAM High School


Station 18846 – Fawn Brook, East Branch



Station 15888 – Fawn Brook, West Branch



Station 17322 – Fourmile River

Monitored on 11/21/2015 by the East Lyme Commission for the Conservation of Natural Resources


Station 18961 – Fraser Brook




Station 15592 – French Brook

Monitored on 11/15/2015 by the Bolton Conservation Commission


Station 16696 – Goodhill Brook



Station 16699 – Gravelly Brook



Station 15313 – Harris Brook




Station 18729 – Harris Brook



Station 16167 – Jeremy River



Station 17324 – Latimer Brook

Monitored on 11/14/2015 by the Niantic River Watershed Committee & East Lyme Cub Scout Pack 7



Monitored on 10/15/2015 by the Niantic River Watershed Committee



Monitored on 10/15/2015 by the Niantic River Watershed Committee


Station 16088 – Lebanon Brook




Station 18981 – Lyman Brook



Station 18982 – Meadow Brook



Station 15211 – Merrick Brook

Monitored on 11/02/2015 by The Last Green Valley Result – 3 Most Wanted types

Station 18871 – Moodus River



Station 16335 – Nonewaug River



Station 17923 – Peckham Brook




Station 18983 – Pocotopaug Creek



Station 16995 – Railroad Brook









Station 18980 – Roaring Brook

Monitored on 09/27/2015 by the Quinnipiac River Watershed Association



Station 14440 – Salmon River

Monitored on 09/12/2015 by the Salmon River Watershed Partnership w/ the CT River Coastal Conservation District & Middletown High School


Station 15007 – Sawmill Brook

Monitored on 10/23/2015 by The Last Green Valley Water Quality Monitoring Program


Station 16431 – Sprain Brook



Station 15713 – Still River



Station 18823 – “Tucker Brook” (Unnamed tributary to

the Tankerhoosen River) Monitored on 10/17/2015 by the Vernon

Conservation Commission Result – 1 Most Wanted type


Station 18958 – Walker Brook

Monitored on 10/26/2015 by the Washington Montessori School


Station 17593 – Wappoquia Brook



Station 18984 – Willeys Brook*

(*Also referred to locally as “Christopher Brook) Monitored on 11/13/2015 by the Salmon River

Watershed Partnership w/ the East Hampton HS Environmental Club


Station 17333 – Wood Creek




Appendix D: 2015 RBV ‘Most Wanted’ Types Occurrence Maps

Riffle Bioassessment by Volunteers (RBV) Program -2015 Summary Report Appendix D

Riffle Bioassessment by Volunteers (RBV) Program -2015 Summary Report Appendix D

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